OITracker Cboe delayed data

Contract OI history

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Jan 21, 2028 EXPIRATION

PFE $13.00 Put

PFE280121P00013000

Latest saved OI803Oct 23, 2026
Last change0vs previous saved observation
Saved market days12Oct 02, 2026 onwards
Daily open interest Hover a point for its date and OI
PFE $13.00 put open interest history 12 saved observations from 2026-10-02 to 2026-10-23. Exact values and changes are listed in the table below. 8034010 2026-10-02: 603 OI2026-10-05: 603 OI2026-10-06: 603 OI2026-10-07: 603 OI2026-10-08: 603 OI2026-10-09: 803 OI2026-10-13: 803 OI2026-10-14: 803 OI2026-10-15: 803 OI2026-10-16: 803 OI2026-10-21: 803 OI2026-10-23: 803 OI Oct 02, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

PFE contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing8030
Oct 21, 20268030
Oct 16, 20268030
Oct 15, 20268030
Oct 14, 20268030
Oct 13, 20268030
Oct 09, 2026803+200
Oct 08, 20266030
Oct 07, 20266030
Oct 06, 20266030
Oct 05, 20266030
Oct 02, 2026603No prior observation